Echo (1)

Echo (1) user commands echo (1)

Name

Echo-display a line of text

Synopsis

Echo [Option]... [String]...

Description

Echo the string (s) to standard output (standard output: Display ).

-N do not output the trailing (later) newline

-E enable interpretation (explanation) of backslash (backslash) escapes

# Allow explanations of characters escape by backslash.

-E disable interpretation of backslash escapes (default)

# By default, characters escape by backslash are not interpreted.

-- Help display this help and exit

-- Version

Output version information and exit

If-E is in effect, the following sequences are recognized (recognized ):

\ 0nnn the character whose ASCII code is NNN (octal)

\ Backslash

\ A alert (BEL)

\ B backspace

\ C suppress trailing newline # forbid trailing line breaks

\ F form feed # page feed

\ N New Line

\ R carriage return

\ T horizontal (horizontal) tab

\ V vertical (vertical) tab

Note: Your shell may have its own version of ECHO, which usually super-

Sedes the version described here. Please refer to your shell's docu-

Mentation for details about the options it supports.

Echo 5.97 February 2010 echo (1)

Practical drills:

[[Email protected] ~] $ Echo "123456789"

123456789

[[Email protected] ~] $ Echo "123 \ t456 \ v789"

123 \ t456 \ v789 # by default, characters escape by backslash are not interpreted.

[[Email protected] ~] $ Echo-e "123 \ t456 \ v789"

123 456

789

# Observe the differences between carriage return (\ r) and line feed (\ n)

[[Email protected] ~] $ Echo-e "123 \ n456 \ r789"

123

789

[[Email protected] ~] $ Echo-e "123 \ n 456 \ r789"

123

7896

[[Email protected] ~] $ Echo-e "123 \ n 456 \ r789"

123

789456

This article is from the "Cooper blog" blog, please be sure to keep this source http://444546012.blog.51cto.com/8578922/1549151

Echo (1)